Kourtney Kardashian appeared on the “Today” show this morning to reveal the identity of her baby’s father: it is her ex-fiance, Scott Disick.

The reality star and Disick, who was a frequent visitor on her E! show “Keeping Up With the Kardashians,” called off their engagement in February after she suspected he was cheating on her.

But now they are reunited. Kourtney (30) told Today: He's very excited. When I found out, I was so shocked. I didn't know what to do. He was so for it and so excited from the beginning. And we're really happy.

How about marriage? We'll see, she said.

Kourtney revealed that the baby will be due in December, meaning that she is 4 or 5 months pregnant.

Good timing for the Keeping Up with the Kardashians star. Her spin-off show with younger sister Khloe, the locally shot Kourtney and Khloe Take Miami, premieres Sunday on E!.

Younger sister Kim Kardashian is thrilled about the new addition to their large family.

“To be an auntie – I’m very excited!” she told Life & Style. “It’s a very exciting time in all of our lives. We definitely went through a lot of craziness to get to this calm place.”